During troubleshooting processes evaluating how to benefit from enhanced networking in your HPC instances, you find out that the setting does not seem functioning. You have VPC peering connection configurations in place. Some of your instances support EFA. You are using AWS CLI, and you have checked that all instances have internet connectivity. Which relevant statement is correct in this scenario?

Answer options:

A.All instance types are supported for using the ENA. Make sure you are using a supported version of the Linux kernel and a supported distribution, you run ethtool -i eth0 and you have to get ENA as the driver.
B.Some instance types are supported for using the ENA. Make sure you are using a supported version of the Linux kernel and a supported distribution, you run ethtool -i eth0 and you have to get ENA as the driver.
C.Neither Enhanced networking uses SR-IOV nor transitive peering is supported.
D.Enhanced networking uses SR-IOV and transitive peering is supported.

Answer: B
ENA is a custom network interface optimized to deliver high throughput on specific supported EC2 instances. This statement defines the correct steps to enable an ENA interface and validate the driver is in place.
Option A is incorrect because not all instance types are supported for using the ENA interface.
Option C is incorrect because enhanced networking uses SR-IOV, and transitive VPC peering is not supported.
Option D is incorrect because although enhanced networking does use SR-IOV, transitive VPC peering is not relevant and not supported either.
References:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking.html